Hazardous waste sludge drying machine

Abstract

The invention relates to a hazardous waste sludge drying machine. The hazardous waste sludge drying machine comprises a combustion chamber, and a motor arranged on one side of a drying cylinder far away from the combustion chamber; the combustion chamber is communicated with the drying cylinder through a feeding ring; the feeding ring is provided with a feed inlet; the drying cylinder comprises aninternal cylinder connected with an inner ring of the feeding ring through rotation connection, and an external cylinder fixedly connected with an outer ring of the feeding ring; the wall of the internal cylinder is provided with a plurality of through holes; a rotating shaft of the motor is connected with a rotating rod stretching into the internal cylinder; the rotating rod is fixedly connectedwith the internal cylinder; the rotating rod is connected with the external cylinder through rotating connection; the periphery of the rotating rod stretching into the internal cylinder is provided with a plurality of agitating rods; a chimney is arranged on the upper part of one end of the external cylinder close to the motor, and a discharge pipe is arranged on the lower part of the end; the chimney and the discharge pipe are communicated with the external cylinder. In drying process, electroplating sludge is subjected to agitating, and rotation collision, so that water content is reduced effectively; the diameters of the through holes on the internal cylinder are the same, so that it is ensured that the particle sizes of particles capable of passing through the through holes are the same, and the water content is ensured to be consistent.

Description

technical field [0001] The invention relates to the field of hazardous waste sludge harmless treatment equipment, in particular to a hazardous waste sludge dryer. Background technique [0002] Hazardous waste sludge mainly comes from the solid waste produced by liquid-phase chemical treatment of various electroplating waste solutions and electrolytic bath solutions in industrial electroplating plants. In order to avoid pollution to the environment, it is necessary to do harmless treatment of electroplating sludge. Before the harmless treatment, it needs to be dehydrated and dried to reduce the water content of the electroplating sludge from 80% to about 10-50%. Dehydration and drying are generally carried out by drying equipment, and the drying equipment in the prior art is not suitable for drying electroplating sludge; because the existing drying equipment only has a heating function, the application of the existing drying equipment If the drying equipment is used for dryi...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an electroplating sludge dryer. By setting a drying cylinder with a rotating inner cylinder and a fixed outer cylinder, it solves the problem of electroplating sludge obtained after drying in the prior art. The water content of the sludge is not up to the standard and the particle size is different

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